Method: Float#infinite?

Defined in:
numeric.c

#infinite? ⇒ -1, ...

Returns:

  • 1, if self is Infinity.

  • -1 if self is -Infinity.

  • nil, otherwise.

Examples:

f = 1.0/0.0  # => Infinity
f.infinite?  # => 1
f = -1.0/0.0 # => -Infinity
f.infinite?  # => -1
f = 1.0      # => 1.0
f.infinite?  # => nil
f = 0.0/0.0  # => NaN
f.infinite?  # => nil

Returns:

  • (-1, 1, nil) 

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# File 'numeric.c', line 1962

VALUE
rb_flo_is_infinite_p(VALUE num)
{
    double value = RFLOAT_VALUE(num);

    if (isinf(value)) {
        return INT2FIX( value < 0 ? -1 : 1 );
    }

    return Qnil;
}